[TYPO3-ect] lib/div: Overriding TS config via FF

[Jochen Rieger]

Dear Philip,

> Well I think it should be change, but please
> let's go beta and start to prevent new changes from breaking code
> already done.
> Change ok but by making a new class variable that
> can be set and activates this new option so that the code already done
> stays functional.

you are absolutely right. But would it really break anything? I don't 
see that. Checking if a FF value contains more than any empty string 
(nothing!) won't change functionality.

Besides ... I consider this more as a bugfix than an added feature 
because the usual behaviour in TYPO3 is just the the fix would make it:

You have general settings via TS but you can override them via flexform 
IN CASE you enter something.

You wouldn't want an empty FF field to delete the default TS settings 
for a config option, would ya?

Regards,
Jochen